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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)ex.h 7.8 (Berkeley) 3/9/87
- * @(#)ex.h 1.2 (Bellcore) 87/04/24
- */
-
- #ifdef V6
- #include <retrofit.h>
- #endif
-
- /*
- * Ex version 3 (see exact version in ex_cmds.c, search for /Version/)
- *
- * Mark Horton, UC Berkeley
- * Bill Joy, UC Berkeley
- * November 1979
- *
- * This file contains most of the declarations common to a large number
- * of routines. The file ex_vis.h contains declarations
- * which are used only inside the screen editor.
- * The file ex_tune.h contains parameters which can be diddled per installation.
- *
- * The declarations relating to the argument list, regular expressions,
- * the temporary file data structure used by the editor
- * and the data describing terminals are each fairly substantial and
- * are kept in the files ex_{argv,re,temp,tty}.h which
- * we #include separately.
- *
- * If you are going to dig into ex, you should look at the outline of the
- * distribution of the code into files at the beginning of ex.c and ex_v.c.
- * Code which is similar to that of ed is lightly or undocumented in spots
- * (e.g. the regular expression code). Newer code (e.g. open and visual)
- * is much more carefully documented, and still rough in spots.
- *
- * Please forward bug reports to
- *
- * Mark Horton
- * Computer Science Division, EECS
- * EVANS HALL
- * U.C. Berkeley 94704
- * (415) 642-4948
- * (415) 642-1024 (dept. office)
- *
- * or to csvax.mark@berkeley on the ARPA-net. I would particularly like to hear
- * of additional terminal descriptions you add to the termcap data base.
- */
-
- #ifndef vms
- #include <sys/param.h>
- #else
- #define MAXBSIZE 1024 /* Maximum block size */
- #include <types.h>
- #endif
- #include <ctype.h>
- #include <errno.h>
- #include <signal.h>
- #include <setjmp.h>
- #ifndef vms
- #include <sys/stat.h>
- #else
- #include <stat.h>
- #endif
-
- #ifndef var
- #define var extern
- #endif
- /*
- * The following little dance copes with the new USG tty handling.
- * This stuff has the advantage of considerable flexibility, and
- * the disadvantage of being incompatible with anything else.
- * The presence of the symbol USG3TTY will indicate the new code:
- * in this case, we define CBREAK (because we can simulate it exactly),
- * but we won't actually use it, so we set it to a value that will
- * probably blow the compilation if we goof up.
- */
- #ifdef USG3TTY
- #include <termio.h>
- #define CBREAK xxxxx
- #else
- #ifndef vms
- #include <sgtty.h>
- #else
- #include "vmstty.h"
- #endif
- #endif
-
- extern int errno;
-
- #ifndef VMUNIX
- typedef short line;
- #else
- typedef int line;
- #endif
- typedef short bool;
-
- #include "ex_tune.h"
- #include "ex_vars.h"
- /*
- * Options in the editor are referred to usually by "value(name)" where
- * name is all uppercase, i.e. "value(PROMPT)". This is actually a macro
- * which expands to a fixed field in a static structure and so generates
- * very little code. The offsets for the option names in the structure
- * are generated automagically from the structure initializing them in
- * ex_data.c... see the shell script "makeoptions".
- */
- struct option {
- char *oname;
- char *oabbrev;
- short otype; /* Types -- see below */
- short odefault; /* Default value */
- short ovalue; /* Current value */
- char *osvalue;
- };
-
- #define ONOFF 0
- #define NUMERIC 1
- #define STRING 2 /* SHELL or DIRECTORY */
- #define OTERM 3
-
- #define value(a) options[a].ovalue
- #define svalue(a) options[a].osvalue
-
- extern struct option options[NOPTS + 1];
-
- #ifdef vms
- #define st_blksize st_fab_mrs
- #define _exit(n) vms_exit(n)
- #define fork() vfork()
- #endif
-
- /*
- * The editor does not normally use the standard i/o library. Because
- * we expect the editor to be a heavily used program and because it
- * does a substantial amount of input/output processing it is appropriate
- * for it to call low level read/write primitives directly. In fact,
- * when debugging the editor we use the standard i/o library. In any
- * case the editor needs a printf which prints through "putchar" ala the
- * old version 6 printf. Thus we normally steal a copy of the "printf.c"
- * and "strout" code from the standard i/o library and mung it for our
- * purposes to avoid dragging in the stdio library headers, etc if we
- * are not debugging. Such a modified printf exists in "printf.c" here.
- */
- #ifdef TRACE
- # include <stdio.h>
- var FILE *trace;
- var bool trubble;
- var bool techoin;
- var char tracbuf[BUFSIZ];
- #else
- # ifdef VMUNIX
- # define BUFSIZ 1024
- # else
- # ifdef u370
- # define BUFSIZ 4096
- # else
- # define BUFSIZ 512
- # endif
- # endif
- # define NULL 0
- # define EOF -1
- #endif
-
- /*
- * Character constants and bits
- *
- * The editor uses the QUOTE bit as a flag to pass on with characters
- * e.g. to the putchar routine. The editor never uses a simple char variable.
- * Only arrays of and pointers to characters are used and parameters and
- * registers are never declared character.
- */
- #define QUOTE 0200
- #define TRIM 0177
- #ifndef vms
- #undef CTRL
- #endif
- #define CTRL(c) ('c' & 037)
- #define NL CTRL(j)
- #define CR CTRL(m)
- #define DELETE 0177 /* See also ATTN, QUIT in ex_tune.h */
- #define ESCAPE 033
-
- /*
- * Miscellaneous random variables used in more than one place
- */
- var bool aiflag; /* Append/change/insert with autoindent */
- var bool anymarks; /* We have used '[a-z] */
- var int chng; /* Warn "No write" */
- var char *Command;
- var short defwind; /* -w# change default window size */
- var int dirtcnt; /* When >= MAXDIRT, should sync temporary */
- #ifdef TIOCLGET
- var bool dosusp; /* Do SIGTSTP in visual when ^Z typed */
- #endif
- var bool edited; /* Current file is [Edited] */
- var line *endcore; /* Last available core location */
- extern bool endline; /* Last cmd mode command ended with \n */
- #ifdef EXSTRINGS
- var short erfile; /* Error message file unit */
- #endif
- var line *fendcore; /* First address in line pointer space */
- var char file[FNSIZE]; /* Working file name */
- var char genbuf[MAXBSIZE]; /* Working buffer when manipulating linebuf */
- var bool hush; /* Command line option - was given, hush up! */
- var char *globp; /* (Untyped) input string to command mode */
- var bool holdcm; /* Don't cursor address */
- var bool inappend; /* in ex command append mode */
- var bool inglobal; /* Inside g//... or v//... */
- var char *initev; /* Initial : escape for visual */
- var bool inopen; /* Inside open or visual */
- var char *input; /* Current position in cmd line input buffer */
- var bool intty; /* Input is a tty */
- var short io; /* General i/o unit (auto-closed on error!) */
- extern short lastc; /* Last character ret'd from cmd input */
- var bool laste; /* Last command was an "e" (or "rec") */
- var char lastmac; /* Last macro called for ** */
- var char lasttag[TAGSIZE]; /* Last argument to a tag command */
- var char *linebp; /* Used in substituting in \n */
- var char linebuf[LBSIZE]; /* The primary line buffer */
- var bool listf; /* Command should run in list mode */
- var char *loc1; /* Where re began to match (in linebuf) */
- var char *loc2; /* First char after re match (") */
- var line names['z'-'a'+2]; /* Mark registers a-z,' */
- var int notecnt; /* Count for notify (to visual from cmd) */
- var bool numberf; /* Command should run in number mode */
- var char obuf[BUFSIZ]; /* Buffer for tty output */
- var short oprompt; /* Saved during source */
- extern short ospeed; /* Output speed (from gtty) */
- var int otchng; /* Backup tchng to find changes in macros */
- var short peekc; /* Peek ahead character (cmd mode input) */
- var char *pkill[2]; /* Trim for put with ragged (LISP) delete */
- var bool pfast; /* Have stty -nl'ed to go faster */
- var int pid; /* Process id of child */
- var int ppid; /* Process id of parent (e.g. main ex proc) */
- var jmp_buf resetlab; /* For error throws to top level (cmd mode) */
- var int rpid; /* Pid returned from wait() */
- var bool ruptible; /* Interruptible is normal state */
- var bool seenprompt; /* 1 if have gotten user input */
- var bool shudclob; /* Have a prompt to clobber (e.g. on ^D) */
- var int status; /* Status returned from wait() */
- var int tchng; /* If nonzero, then [Modified] */
- extern short tfile; /* Temporary file unit */
- var bool vcatch; /* Want to catch an error (open/visual) */
- var jmp_buf vreslab; /* For error throws to a visual catch */
- var bool writing; /* 1 if in middle of a file write */
- var int xchng; /* Suppresses multiple "No writes" in !cmd */
- var long bsize; /* Block size for disk i/o */
-
- /*
- * Macros
- */
- #define CP(a, b) (ignore(strcpy(a, b)))
- /*
- * FIXUNDO: do we want to mung undo vars?
- * Usually yes unless in a macro or global.
- */
- #define FIXUNDO (inopen >= 0 && (inopen || !inglobal))
- #define ckaw() {if (chng && value(AUTOWRITE)) wop(0);}
- #define copy(a,b,c) Copy((char *) a, (char *) b, c)
- #define eq(a, b) ((a) && (b) && strcmp(a, b) == 0)
- #define getexit(a) copy(a, resetlab, sizeof (jmp_buf))
- #define lastchar() lastc
- #define outchar(c) (*Outchar)(c)
- #define pastwh() (ignore(skipwh()))
- #define pline(no) (*Pline)(no)
- #define reset() longjmp(resetlab,1)
- #define resexit(a) copy(resetlab, a, sizeof (jmp_buf))
- #define setexit() setjmp(resetlab)
- #define setlastchar(c) lastc = c
- #define ungetchar(c) peekc = c
-
- #define CATCH vcatch = 1; if (setjmp(vreslab) == 0) {
- #define ONERR } else { vcatch = 0;
- #define ENDCATCH } vcatch = 0;
-
- /*
- * Environment like memory
- */
- var char altfile[FNSIZE]; /* Alternate file name */
- extern char direct[ONMSZ]; /* Temp file goes here */
- extern char shell[ONMSZ]; /* Copied to be settable */
- extern char ttytype[ONMSZ]; /* A long and pretty name */
- var char uxb[UXBSIZE + 2]; /* Last !command for !! */
-
- /*
- * The editor data structure for accessing the current file consists
- * of an incore array of pointers into the temporary file tfile.
- * Each pointer is 15 bits (the low bit is used by global) and is
- * padded with zeroes to make an index into the temp file where the
- * actual text of the line is stored.
- *
- * To effect undo, copies of affected lines are saved after the last
- * line considered to be in the buffer, between dol and unddol.
- * During an open or visual, which uses the command mode undo between
- * dol and unddol, a copy of the entire, pre-command buffer state
- * is saved between unddol and truedol.
- */
- var line *addr1; /* First addressed line in a command */
- var line *addr2; /* Second addressed line */
- var line *dol; /* Last line in buffer */
- var line *dot; /* Current line */
- var line *one; /* First line */
- var line *truedol; /* End of all lines, including saves */
- var line *unddol; /* End of undo saved lines */
- var line *zero; /* Points to empty slot before one */
-
- /*
- * Undo information
- *
- * For most commands we save lines changed by salting them away between
- * dol and unddol before they are changed (i.e. we save the descriptors
- * into the temp file tfile which is never garbage collected). The
- * lines put here go back after unddel, and to complete the undo
- * we delete the lines [undap1,undap2).
- *
- * Undoing a move is much easier and we treat this as a special case.
- * Similarly undoing a "put" is a special case for although there
- * are lines saved between dol and unddol we don't stick these back
- * into the buffer.
- */
- var short undkind;
-
- var line *unddel; /* Saved deleted lines go after here */
- var line *undap1; /* Beginning of new lines */
- var line *undap2; /* New lines end before undap2 */
- var line *undadot; /* If we saved all lines, dot reverts here */
-
- #define UNDCHANGE 0
- #define UNDMOVE 1
- #define UNDALL 2
- #define UNDNONE 3
- #define UNDPUT 4
-
- #ifdef CRYPT
- /*
- * Various miscellaneous flags and buffers needed by the encryption routines.
- */
- #define KSIZE 9 /* key size for encryption */
- #define KEYPROMPT "Key: "
- var int xflag; /* True if we are in encryption mode */
- var int xtflag; /* True if the temp file is being encrypted */
- var int kflag; /* True if the key has been accepted */
- var char perm[768];
- var char tperm[768];
- var char *key;
- var char crbuf[CRSIZE];
- char *getpass();
- #endif
-
- /*
- * Function type definitions
- */
- #define NOSTR (char *) 0
- #define NOLINE (line *) 0
-
- extern int (*Outchar)();
- extern int (*Pline)();
- extern int (*Put_char)();
- var int (*oldhup)();
- int (*setlist())();
- int (*setnorm())();
- int (*setnorm())();
- int (*setnumb())();
- line *address();
- char *cgoto();
- char *genindent();
- char *getblock();
- char *getenv();
- #ifdef vms
- char *getlog();
- #endif
- line *getmark();
- char *longname();
- char *mesg();
- char *place();
- char *plural();
- line *scanfor();
- line *setin();
- char *strcat();
- char *strcpy();
- char *strend();
- char *tailpath();
- char *tgetstr();
- char *tgoto();
- char *ttyname();
- line *vback();
- char *vfindcol();
- char *vgetline();
- char *vinit();
- char *vpastwh();
- char *vskipwh();
- int put();
- int putreg();
- int YANKreg();
- int ex_delete();
- int execl();
- int filter();
- int getfile();
- int getsub();
- int gettty();
- int join();
- int listchar();
- off_t lseek();
- int normchar();
- int normline();
- int numbline();
- var int (*oldquit)();
- int onhup();
- int onintr();
- int onsusp();
- int putch();
- int shift();
- int termchar();
- int vfilter();
- #ifdef CBREAK
- int vintr();
- #endif
- int vputch();
- int vshftop();
- int yank();
-
- /*
- * C doesn't have a (void) cast, so we have to fake it for lint's sake.
- */
- #ifdef lint
- # define ignore(a) Ignore((char *) (a))
- # define ignorf(a) Ignorf((int (*) ()) (a))
- #else
- # define ignore(a) a
- # define ignorf(a) a
- #endif
-